Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-21-356828-index-headers.html | 2021-12-14 16:30:07 | |
| 0001193125-21-356828-index.html | 2021-12-14 16:30:07 | |
| 0001193125-21-356828.txt | 2021-12-14 16:30:07 | |
 0001193125-21-356828-xbrl.zip | 106201 | 2021-12-14 16:30:07 |
| altm-20211214.xsd | 2916 | 2021-12-14 16:30:07 |
| altm-20211214_lab.xml | 19657 | 2021-12-14 16:30:07 |
| altm-20211214_pre.xml | 12331 | 2021-12-14 16:30:07 |
| d127914d8k.htm | 27367 | 2021-12-14 16:30:07 |
| d127914d8k_htm.xml | 3666 | 2021-12-14 16:30:07 |
| d127914dex231.htm | 2832 | 2021-12-14 16:30:07 |
| d127914dex991.htm | 922153 | 2021-12-14 16:30:07 |
| FilingSummary.xml | 1770 | 2021-12-14 16:30:07 |
| Financial_Report.xlsx | 5755 | 2021-12-14 16:30:07 |
| MetaLinks.json | 20158 | 2021-12-14 16:30:07 |
| R1.htm | 43498 | 2021-12-14 16:30:07 |
| report.css | 2767 | 2021-12-14 16:30:07 |
| Show.js | 1085 | 2021-12-14 16:30:07 |